CN102150027A - Device incorporating a pressure sensor for measuring pressures within an internal combustion engine - Google Patents
Device incorporating a pressure sensor for measuring pressures within an internal combustion engine Download PDFInfo
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- CN102150027A CN102150027A CN2009801348368A CN200980134836A CN102150027A CN 102150027 A CN102150027 A CN 102150027A CN 2009801348368 A CN2009801348368 A CN 2009801348368A CN 200980134836 A CN200980134836 A CN 200980134836A CN 102150027 A CN102150027 A CN 102150027A
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- tubular zone
- zone
- tubular
- elastically deformable
- interface interaction
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
- G01L23/08—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid operated electrically
- G01L23/10—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid operated electrically by pressure-sensitive members of the piezoelectric type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
- F23Q7/001—Glowing plugs for internal-combustion engines
- F23Q2007/002—Glowing plugs for internal-combustion engines with sensing means
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- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
This device comprises an outer casing having: a first tubular zone (16) to the inside of which a finger (4) is fastened; a second tubular zone (40) of larger outside diameter than that of the first tubular zone (16) and extending the first tubular zone (16); and an elastically deformable part (18) of annular shape, extending in a plane transverse to the first tubular zone (16) and connecting the first tubular zone (16) to the second tubular zone (40). The pressure sensor (8) is placed between, on one side, an element (30) integral with the finger and, on the other side, a fixed element (20), called an interface, which is integral with the second tubular zone (40). The interface (20) has an axial contact zone (42) for contact with an element constituting the second tubular zone.
Description
Technical field
The present invention relates to be integrated with the device of measuring the pressure transducer that pressure is used in the internal combustion engine.
Background technology
In internal combustion engine, especially in the engine of Diesel's type, each cylinder typical case has a heater plug, and especially when engine start, described heater plug can heat inside, corresponding firing chamber.This heater plug is arranged in one of the cylinder cover that passes engine and attacks in the threaded vestibule.Therefore, this heater plug has a threaded main body and and refers to the body of rod, and described threaded main body is suitable for being installed in the corresponding vestibule of cylinder cover, admits a preheating electrode in the described finger body of rod.
Also knownly, a pressure transducer is integrated in this heater plug.In fact, notice, understand the force value in each cylinder, can control the flame mechanism of this engine center preferably.Therefore, this information is used for regulating the fuel injection of each cylinder.Therefore, the disposal of pollutants material of engine can be reduced, and fuel consumption is optimized.
In the heater plug that is integrated with a pressure transducer of prior art, described pressure transducer often is received within the part of the heater plug main body that is called the heater plug head, or is installed on this heater plug head.This heater plug head is the part that is in the cylinder outside of heater plug main body.For example, patent documentation EP-1096141 proposes this heater plug.
In these heater plugs, suitable is will engine interior be full of in the corresponding cylinder the pressure transmission up to be arranged in external engine, in the heater plug head or the pressure transducer on the heater plug head.Proposed different installation methods, be passed to pressure transducer again in order to the acting force on the finger body of rod that is arranged in cylinder that is applied to heater plug.Therefore, different mechanical component by between put at pressure transducer and heater plug and refer between the body of rod.Put the measurement that component affecting is implemented between these various kinds.
Patent documentation FR-2 884 299 proposes a kind of heater plug, and it has: tubular body, and it has a heater plug head and makes tubular body be fixed on fixed area in the vestibule; Refer to the body of rod, it is installed in the end place relative with the heater plug head on the heater plug main body; And pressure transducer.In this heater plug, refer to that the body of rod is fixed in the main body of heater plug, so that link together at a join domain and described main body, and the main body of heater plug is at it and refer to the join domain of the body of rod and be fixed between the fixed area in the vestibule to have an elastically deformable part, the described part that is resiliently deformable is resiliently deformable, so that described join domain is movable, and can be to move in the vertical with respect to fixed area in the vestibule of fixing in a setting.Pressure transducer itself then is arranged on the one hand to an element that is connected with join domain and is between the retaining element of heater plug on the other hand.
Like this, described elastically deformable partly plays the same effect of lamina membranacea, and it makes heater plug main body separated into two parts: a fixed part, be used for being installed in a cylinder cover and a movable part, and it stands the pressure that is full of in the cylinder of corresponding engine.This lamina membranacea deformable, and movable part vertically moves.Therefore, thisly depend on that the motion of the pressure in the cylinder is passed to pressure transducer, thereby pressure transducer provides the indication about the pressure on the finger body of rod that is applied to heater plug.Adopt this heater plug, the measurement of pressure transducer no longer is subjected to the interference of parasitic vibration.In fact, moving of lamina membranacea is not subjected in cylinder cover or full stress influence in the remainder of the main body of heater plug.
Patent documentation DE-10 2,006 008 639 and patent documentation DE-10 2,006 059 693 propose to be integrated with the heater plug of a pressure transducer.In these heater plugs, pressure transducer is arranged in a fixed component and refers between the body of rod, described fixed component is connected in the main body of heater plug, and is arranged on the pressure transducer (promptly with refer to the relative side of the body of rod), and the described finger body of rod transmits the external pressure that it bears by insulating component.A member that is called the elasticity lamina membranacea so that dispel the heat, and does not influence pressure survey towards outside connection of heater plug referring to the body of rod.The function of the elasticity lamina membranacea of all addressing in each of these patent documentations is different from the function of the elasticity lamina membranacea of addressing among the patent documentation FR-2 884 299 fully.
Known ground in Diesel's type of engine (being generally the engine of big cylinder capacity) and gasoline types engine, has one and is exclusively used in the device of measuring pressure in the engine chamber.Therefore, this device has a main body, and this main body has the main body of making and is fixed on portion's group in the cylinder cover, and a pressure transducer is positioned at this main body.The present invention also relates to this device for pressure measurement.Hereinafter, when relating to plug or heater plug, also relating to device for pressure measurement---it is sometimes referred to as free-standing pressure transducer SAPS (english term Stand Alone Pressure Sensor, or French term capteur de pression isol é), but, for simplicity, will not mention expressly.
As mentioned above, the installation of heater plug is heater plug to be screwed in one attack in the threaded vestibule.In order to implement sealing,, arrange a stop part in spiral end.This stop part is tapered, and admits the support cone on the main body that is implemented in heater plug.When fastening heater plug, support cone abuts against the taper stop part of cylinder cover, and applies a Tightening moment, to guarantee the excellent sealing between heater plug main body and cylinder cover.Because this Tightening moment, the surface of contact place between heater plug main body and cylinder cover produces reacting force.These acting forces are orthogonal to conical contact face, thereby have a vertical component and a radial component with respect to the heater plug main body.
Under the situation of the heater plug of addressing in aforementioned documents FR-2 884 299, the support cone next-door neighbour is also referred to as the elastically deformable part of lamina membranacea.Therefore, the acting force that is produced by Tightening moment forms a moment that acts on lamina membranacea, and this moment influences the prestress on the pressure transducer that is applied to described heater plug.The moment that acts on lamina membranacea changes according to Tightening moment, thereby the prestress of pressure transducer also changes.Like this, if heater plug is reinstalled in dismounting then, Tightening moment is implemented by torque-indicating wrencg simultaneously, so, should not have tangible influence to the prestress of pressure transducer.But the acting force that is applied to the carrying plane place is not only to depend on Tightening moment, and depends on this fastening condition of carrying out: screw thread state heater plug and cylinder cover, have or not lubricant etc.For same Tightening moment, it may be noted that make heater plug be bearing in acting force that the carrying plane place on the taper stop part of cylinder cover produces from single doubly to change doublely.
These are commented and also are applicable to the free-standing pressure transducer of implementing according to the instruction of aforementioned french patent document.
Summary of the invention
Therefore, the present invention is intended to propose to measure better portion's group of the pressure that is full of in the cylinder of internal combustion engine, and described mensuration especially is not integrated with the installation and removal influence of the heater plug of a pressure transducer (or a free-standing pressure transducer).Advantageously, the pressure survey of being carried out is not subjected to or the least possible deformation effect that is subjected to heater plug (or free-standing pressure transducer) to be installed in cylinder cover wherein.
The present invention also is intended to propose such parts: it can have heater plug is tightened in higher Tightening moment in the cylinder cover, guaranteeing excellent sealing, but can not produce sensitive element (piezoelectricity or the similar elements) unloading that makes pressure transducer, promptly eliminate the prestressed danger of this sensitive element.
For this reason, the present invention proposes, and is integrated with the device of measuring the pressure transducer that pressure is used in the internal combustion engine, and described device has outer jacket, and described outsourcing cover has:
-the first tubular zone refers to that the body of rod is fixing within it,
-the second tubular zone, its external diameter be greater than the external diameter in the described first tubular zone, and it prolongs the described first tubular zone, and
The elastically deformable part of-annular, it extends in respect to the described first tubular zone and is in the horizontal plane, and makes the described first tubular zone be connected in the described second tubular zone,
Described pressure transducer be arranged on the one hand for the element that links to each other with the described finger body of rod and be on the other hand with the retaining element that is called interface interaction spare that the described second tubular zone links to each other between.
According to the present invention, described interface interaction spare has axial contact area, and this axial contact area axially contacts with the element that constitutes the described second tubular zone.
Like this, when acting force trend towards acting on described elastically deformable part so that its in device when mobile, described interface interaction spare can be used as the axial stop part.
Be also referred to as lamina membranacea below the described elastically deformable part, can guarantee the mechanical connection between the described first tubular zone and the described second tubular zone, only be retained in simultaneously the degree of freedom between these two zones, promptly move axially (or vertically moving) toward each other.
One embodiment of the present invention---especially can be implemented described axial stop part---and be designed to: described interface interaction spare has a zone that is called the side direction contact area, this zone or corresponding to the lateral-supporting zone between the inside surface in described interface interaction spare and the described second tubular zone, perhaps corresponding to a zone of described interface interaction spare, this zone has an external diameter, and this external diameter is corresponding to the external diameter of described second tubular area; And, described device between described lamina membranacea and the described interface interaction spare, i.e. outer wall thickness below described side direction contact area, greater than the outer wall thickness of the described side direction contact area of being right after of described device top.
To pressure transducer transfer function power, described elastically deformable part for example only forms a single piece with the described first tubular zone for preferably.In such enforcement modification, described have elastically deformable part simultaneously and for example have at least one and the identical zone of the second tubular regional external diameter with the member in the described first tubular zone.
In device of the present invention, advantageously, the element that links to each other with the described finger body of rod is to described pressure transducer prestress; And preferably, when the described finger body of rod bore external pressure, the described stress that is applied on the described pressure transducer reduced.Can have the compact structure that helps carrying out the good measurement of reliability like this.
In order also to reduce the deformation effect of cylinder cover---described device is used for being installed in described cylinder cover, advantageously, described interface interaction spare also has the side direction contact area, height with respect to the described second tubular zone, described side direction contact area has little height, for example, the height of described side direction contact area be lower than the described second tubular zone height 1/10th.
Still in order to reduce the deformation effect of cylinder cover, preferably, described axial contact area is arranged to as far as possible near described elastically deformable part, for example with this elastically deformable part at a distance of less than 2 millimeters.
In first embodiment of the present invention, be designed to, the described first tubular zone, the described second tubular zone and described elastically deformable partly are embodied on the same member that is called outside main body; The main body of described outside has an inside surface; Described inside surface has a shoulder near described elastically deformable part, this shoulder has an axially mounting face, this an axially mounting face and a circumferential flank surface adjacency; And described interface interaction spare is bearing on the described axially mounting face on the one hand, and is bearing on the described circumferential side surface by the press fit mounting means on the other hand.
According to another embodiment of the present invention, the described first tubular zone, the described second tubular zone and described elastically deformable partly are implemented on two different members.In this case, can consider different enforcement modification.
According to the first enforcement modification, one first member has the part in the described first tubular zone, described elastically deformable part and the described if necessary second tubular zone; One second member is corresponding to the major part in the described second tubular zone; And described interface interaction spare has an annular region, and the external diameter of described annular region is corresponding to the external diameter in the described second tubular zone, and described annular region is disposed between described first member and described second member.
Second implements modification itself is designed to, and one first member has the described first tubular zone, described elastically deformable part and the part in the second tubular zone if necessary; One second member is corresponding to the major part in the described second tubular zone; Described first member has an inside surface; Described inside surface has a shoulder near described elastically deformable part, described shoulder has an axially mounting face, a described axially mounting face and a circumferential flank surface adjacency; And described interface interaction spare is bearing on the described axially mounting face on the one hand, is bearing on the described circumferential flank surface by the press fit mounting means on the other hand.
At last, according to the 3rd enforcement modification, one first member has the part in described interface interaction spare and the described first tubular zone, described elastically deformable part and the described if necessary second tubular zone; And one second member is corresponding to the major part in the described second tubular zone.
According to the present invention, said apparatus for example is a heater plug.
At last, the present invention relates to have the internal combustion engine of said apparatus.
Description of drawings
From the explanation below with reference to schematic figures, details of the present invention and superiority will better be represented, and accompanying drawing is as follows:
Fig. 1 is the external view of the heater plug of prior art;
Fig. 2 is a partial enlarged drawing, and wherein, the outer body of heater plug is dissectd, with pressure transducer and the preheating obturating plug that prior art shown in Figure 1 is shown;
Fig. 3 is mounted in the schematically vertical semisectional view according to the device of pressure transducer of the present invention of being integrated with in the cylinder cover, and pressure transducer and the supporting of described device on the conical seat of cylinder cover are shown; And
Fig. 4 A, 4B and 4C each corresponding to part figure shown in Figure 3, and it illustrates the enforcement modification according to device of the present invention.
Embodiment
Following explanation is made with reference to the heater plug that is integrated with pressure transducer.But,, the present invention also relates to be sometimes referred to as the device for pressure measurement of free-standing pressure transducer SAPS (english term Stand Alone Pressure Sensor or French term capteur de pression isol é) here.This device for example is used for Diesel's type of engine (being generally the engine of big cylinder capacity) and gasoline types engine, being determined at the pressure in the engine chamber, and does not combine with heater plug or igniter plug.Therefore, for each firing chamber that relates to, the wellhole of a special use is provided for installing this device.
Heater plug of the prior art shown in Fig. 1 and 2 is a disclosed heater plug in FR-2 884 299.This heater plug is well known to a person skilled in the art that mode has a main body 2, and refers to the body of rod 4, a core bar 6 and a pressure transducer 8.
Main body 2 is tubular, has a plurality of cylindrical portion sections.At the first end that is called heater plug head 10, the heater plug main body has a gripping area, and this gripping area has the outside surface that is hexagonal cross-section.This gripping area is used for mounting and dismounting heater plug by the mode of screwing tightly/screwing pine.In order to carry out this installation, set a threaded portion 12, its contiguous heater plug head 10.Respective threads is provided in the cylinder cover of engine, is used for matching with described threaded portion 12.For between cylinder cover and heater plug, carrying out good sealing, also can consider on main body 2, to implement a sealing awl 14.Sealing awl matches with the complementary conical surface of implementing in the cylinder cover, and guarantees good sealing between two members by form fit.
In a side relative with the heater plug head, heater plug main body 2 is loaded with the finger body of rod 4 of heater plug.This refers to that the body of rod is used for being installed in the firing chamber of corresponding engine.This refers to that the body of rod 4 forms the heating element of heater plug.
Preferably, as shown in the figure, refer to that the body of rod 4 is that pottery refers to the body of rod.This finger body of rod is well known to a person skilled in the art, will not describe in detail here.Can be furnished with the little heating element of size.But, also can for example relate to a metal finger body of rod.This refers to core bar 6 supply of current of the body of rod 4 by the main body 2 of passing heater plug.At heater plug head 10 places, the setting of a connection piece (not shown) is connected in power supply can make core bar 6.
The end bearing relative with the heater plug head of heater plug main body 2 has the body of rod 4 of finger.This end is the zone of cylindrical cross-section, and this regional internal diameter adapts to the external diameter that refers to the body of rod 4.The finger body of rod 4 fixing on the end 16 of heater plug main body 2 for example implemented by soldering.Soldering can be carried out on the whole height of end 16, and the diameter of end 16 adapts to the diameter that refers to the body of rod 4.Soldering can make and refer to that the body of rod 4 is able to link together with the end 16 of heater plug main body 2.Can adopt other technology so that refer to the body of rod 4 and the end 16 of main body 2 and link together here.For the ease of soldering, can propose, make with the material that is fit to the bottom with heater plug main body 2 of end 16.Preferably, the expansion coefficient of this material is near the expansion coefficient that is used to make the pottery that refers to the body of rod 4.Thereby the main body 2 of heater plug can be assembled by a plurality of members.On Fig. 2, the main body 2 shown in it may be noted that has a composition surface, and this composition surface is corresponding to the fitting surface of two members that are welded to one another that are used to form main body 2.
The end 16 of heater plug main body 2 forms heater plug main bodys 2 and refers to join domain between the body of rod 4.This join domain is connected in the remainder of heater plug main body 2 by the part of described elastically deformable main body, and this elastic part is called lamina membranacea 18 hereinafter.At sealing awl 14 places, the remainder that end 16 is connected in heater plug main body 2 is implemented by lamina membranacea 18.
Lamina membranacea 18 is the form of a ring washer, and it is arranged in the plane with the axis normal of the main body 2 of heater plug.Lamina membranacea obtains by the material attenuation, and only forms a single piece with the end 16 of main body 2 here.The thickness of lamina membranacea (longitudinally recording) for example is about 0.3 millimeter.This thickness is less than the wall thickness of main body 2.The wall thickness of main body 2 for example can be between 0.5 millimeter to 1 millimeter.The width of this lamina membranacea 18 is about 0.5 millimeter.In this numerical example, this means that the external radius of lamina membranacea 18 and the difference between the inside radius thereof are 0.5 millimeter.
As seeing from Fig. 2, the large diameter outward flange of lamina membranacea 18 is connected in sealing awl 14.The part between sealing awl 14 and threaded regional 12, that comprise this threaded zone of heater plug main body 2 is rigid regions.This rigid region is installed in the corresponding cylinder cover, and sets it and fix.When axial force is applied on the finger body of rod 4, lamina membranacea 18 bendings, and refer to that the body of rod 4 vertically moves together with the end 16 of main body 2.Thereby can find, be that the setting of the main body 2 of heater plug is the zone of fixing in a side of lamina membranacea 18, and be mobilizable zone at opposite side.Therefore, the separation between lamina membranacea 18 these two zones of realization.
When applying a pressure in corresponding cylinder, this pressure applies on referring to the body of rod 4 and trends towards making this to refer to acting force in the body of rod indentation heater plug main body 2.The measurement of this pressure is undertaken by pressure transducer 8.This relates to piezoelectric sensor.
Described fixed component is called interface interaction spare 20 hereinafter.It relates to columniform pipe fitting.Its shape and size thereof are suitable for can being received within the tubular main body 2 on the one hand, and can allow core bar 6 pass through on the other hand.This interface interaction spare 20 in heater plug main body 2 near in place above the sealing awl 14.Therefore, this member is very near the described finger body of rod 4.One pedestal 22 is configured in the inside surface of heater plug main body 2, is used to admit described interface interaction spare 20.
The above-mentioned movable member of mentioning is positioned at pressure transducer 8 tops.Here be a ring 30.Ring 30 is also by an electrical insulation parts 24 and pressure transducer 8 electrical isolations.Ring 30 is welded on the core bar 6, for example is welded on the core bar 6 with method of laser welding.
At quiescent condition, in the time of when be applied to the finger body of rod 4 without any pressure on, pressure transducer 8 is to be in to be subjected to stress state.When pressure was applied on the finger body of rod 4, the stress at pressure transducer place reduced, and this pressure transducer 8 is measured this STRESS VARIATION.
Fig. 3 illustrates according to heater plug of the present invention.Can find aforesaid main element on this heater plug, described main element is still arranged in the same way.With reference to the of the prior art above-mentioned heater plug of Fig. 1 and 2 and shown in Figure 3 according to the difference between the heater plug of the present invention, relate in one aspect to such zone: in described zone, heater plug main body 2 is bearing on the pedestal of making in the cylinder cover 34 32, promptly be arranged in the zone at prior art sealing awl 14 places, described on the other hand difference relates to the connection between the jacket outside interface interaction spare 20 and heater plug, i.e. the connection at pedestal 22 places in the prior art.
Heater plug shown in Figure 3 has a carrying plane 36, and it is used for matching with the pedestal 32 of cylinder cover 34.At first, this carrying plane 36 is implemented in around the end free end of one ring-shaped skirt 38 of 16 high-order portion.
Set like this in this instructions: described heater plug has vertically arranged longitudinal axis, and heater plug head 10 is in a high position, and refers to that the body of rod 4 is in low level.
It is second tubular regional 40 that main body 2 also has, and this second tubular regional 40 has cylindrical outer surface, and forms around the outer jacket that refers to the body of rod 4 and pressure transducer 8 with the first tubular zone or end 16.Also has this tubular zone on the heater plug of the prior art illustrated in figures 1 and 2.This tubular zone extend in threaded regional 12 and support region between, heater plug is bearing on the pedestal 32 of described cylinder cover 34 in described support region.
Be connected by lamina membranacea 18 each other with second tubular regional 40 of the 16 corresponding first tubular zones, end of main body 2 and main body 2.Especially as shown in the figure, second tubular regional 40 the external diameter is greater than the external diameter of the end 16 that also has cylindrical outer surface itself.
In embodiment shown in Figure 3, skirt section 38 prolongations second are tubular by regional 40.This skirt section 38 has a thickness, and this thickness is at most the thickness of main body at second tubular regional 40 places, so that do not influence lamina membranacea 18 work.
According to the present invention, the connection between the interface interaction spare 20 and the second tubular zone has an axial contact area.
In embodiment shown in Figure 3, main body 2 preferably as far as possible near lamina membranacea 18, has a shoulder and a lateral-supporting face 44 in one in second tubular regional 40 the bottom, and described interior shoulder has an axially mounting face 42.In fact, should make interface interaction spare 20 is second tubular regional 40 linking together of fixing with setting.Be installed in second tubular regional 40 to 20 press fits of interface interaction spare.This installation guarantees that interface interaction spare 20 is locked in second tubular regional 40, thereby the interface interaction spare 20 and the fixed part of main body 2 are linked together.
Interface interaction spare 20 also is bearing on the axially mounting face 42, so that when heater plug being fastened in its vestibule, lock described lamina membranacea, but does not influence lamina membranacea for passing through to refer to the body of rod 4 gaging pressure elastic deformations.In fact, when Tightening moment was applied on the heater plug main body 2, carrying plane 36 abutted against pedestal 32.Because the tapering of pedestal 32 and carrying plane 36, have on the one hand for axial thrust load and be applied on the main body 2 for the reacting force of radial component on the other hand, and put on especially in the contact area between main body 2 and the pedestal 32.These acting forces produce moment, and described moment is tending towards making upwards (promptly towards the spark plug head) pivot of lamina membranacea 18.Thereby according to for making the heater plug main body be installed in the Tightening moment that in the cylinder cover heater plug main body is applied, an either large or small induced moment (couple induit) is passed to lamina membranacea 18.This induced moment acts on the prestress of pressure transducer 8, and trends towards alleviating this prestress.
The existence of axially mounting face 42 can stop lamina membranacea 18 pivot that hoists.Interface interaction spare 20---it is installed by press fit and is locked in second tubular regional 40---is bearing on the described axially mounting face 42, and is used as the stop part of lamina membranacea 18.
Therefore for the distortion that limits cylinder cover 34 tonometric influence to pressure transducer 8, lateral-supporting face 44 is arranged near lamina membranacea 18 on the one hand as far as possible, promptly as far as possible away from the zone of this distortion of generation of cylinder cover, on the other hand, lateral-supporting face 44 has the height that reduces with respect to second tubular regional 40 the overall height, to reduce the influence of these distortion to interface interaction spare 20.
Fig. 4 A, 4B play a part identical with the enforcement modification shown in the 4C: they can stop lamina membranacea 18 pivot that hoists, and reduce the tonometric influence that the distortion of cylinder cover is carried out pressure transducer 8.
Implement in the modification at these three, outer jacket by the first tubular zone or end 16, lamina membranacea 18 and second tubular regional 40 heater plugs that form, form by two different members, and in first embodiment shown in Figure 3, these different sets of elements groups are in same single piece.
Enforcement modification shown in Fig. 4 A proposes: one first member of outer jacket comprises the first tubular zone or end 16, lamina membranacea 18 and second tubular regional 40 the lower end---it especially comprises skirt section 38 here.Second member of outer jacket is corresponding to second tubular regional 40 the remainder.Here, interface interaction spare 20 has an annular region 46, and annular region 46 is received between first and second members of outer jacket.The outside surface of annular region 46 is preferably cylindrical, and its diameter is identical with the diameter of second tubular regional 40 the outside surface, with the continuity of the outside surface of guaranteeing main body 2.
With respect to embodiment shown in Figure 3, has bigger axially mounting face, because this axially mounting face extends to the outside surface of heater plug main body.With respect to embodiment shown in Figure 3, interface interaction spare 20 is integrated with second a tubular part of regional 40.
Embodiment shown in Fig. 4 B is similar to embodiment shown in Figure 3.Can find identical configuration, still, second a tubular part of regional 40 forms a member different with the remainder of outer jacket, and the remainder of outer jacket comprises second tubular regional 40, lamina membranacea 18 and the end 16.
With respect to the enforcement modification shown in Fig. 4 A and the 4B, the embodiment shown in Fig. 4 C is designed to, and interface interaction spare is integrated with lamina membranacea 18 and end 16, and this end 16 forms the first tubular zone.
Implement in the modification (Fig. 3 to 4C) at all these, label 44 refers to the join domain of interface interaction spare 20 and outer jacket.This join domain or corresponding to a lateral-supporting face (Fig. 4 A and 4C) perhaps forms the zone of bridge joint between heater plug inside and outside thereof corresponding to interface interaction spare 20.Mention as mentioned, preferably, the as close as possible lamina membranacea 18 of this join domain, and its height reduces with respect to second tubular regional 40.
Pivot for fear of lamina membranacea when heater plug main body 2 is applied Tightening moment 18, be right after thickness (radially recording) at the heater plug outer wall under the described join domain greater than the outer wall thickness that is right after on described join domain.In view of these surfaces externally are aligned, therefore, wall is more extending inward below the join domain than above join domain, thereby allows lamina membranacea is being implemented locking aspect the rotation.
The enforcement modification that the present invention is not limited to above-mentioned embodiment and addresses.The invention still further relates to all embodiments in those skilled in the art's scope in power.
Therefore, for example, all pointed numerical datas and are nonrestrictive only as an illustration.
In addition, in said embodiment, the heater plug main body has a skirt section at the position of this body abutment on the cylinder cover pedestal.The present invention also can be applicable to not have the heater plug in this skirt section.
The present invention equally can be with being implemented as single piece or being implemented by (heater plug or free-standing pressure transducer) outer body that a plurality of members are implemented as.
Claims (14)
1. be integrated with the device of measuring the pressure transducer (8) that pressure is used in the internal combustion engine, described device has outer jacket, and described outsourcing cover has:
-the first tubular zone (16) refers to that the body of rod (4) is fixing within it,
-the second tubular zone (40), its external diameter be greater than the external diameter in the described first tubular zone (16), and it prolongs the described first tubular zone (16), and
The elastically deformable part (18) of-annular, it extends in respect to the described first tubular zone (16) and is in the horizontal plane, and makes the described first tubular zone (16) be connected in the described second tubular zone (40),
Described pressure transducer (8) be arranged on the one hand for the element (30) that links to each other with the described finger body of rod and be on the other hand with the retaining element that is called interface interaction spare (20) that the described second tubular zone (40) links to each other between,
It is characterized in that described interface interaction spare (20) has axial contact area (42), this axial contact area (42) axially contacts with the element that constitutes the described second tubular zone.
2. device according to claim 1, it is characterized in that, described interface interaction spare (20) has a zone that is called side direction contact area (44), this zone or corresponding to the lateral-supporting zone between the inside surface in the described interface interaction spare (20) and the described second tubular zone (40), perhaps corresponding to a zone of described interface interaction spare (20), this zone has an external diameter, and this external diameter is corresponding to the external diameter of described second tubular area (40); And, described device between described lamina membranacea (18) and described interface interaction spare (20), promptly at the outer wall thickness of described side direction contact area (44) below, greater than the outer wall thickness of the described side direction contact area of being right after of described device (44) top.
3. device according to claim 1 and 2 is characterized in that, described elastically deformable part (18) only forms a single piece with the described first tubular zone (16).
4. device according to claim 3 is characterized in that, the member that is integrated with the described elastically deformable part (18) and the described first tubular zone (16) simultaneously has the zone that at least one and the described second tubular zone (40) have same outer diameter as.
5. according to each described device in the claim 1 to 4, it is characterized in that the element (30) that links to each other with the described finger body of rod is to described pressure transducer (8) prestress; And when the described finger body of rod bore external pressure, the described stress that is applied on the described pressure transducer (8) reduced.
6. according to each described device in the claim 1 to 5, it is characterized in that described interface interaction spare (20) also has side direction contact area (44); And with respect to the height in the described second tubular zone (40), described side direction contact area (44) has little height, for example, the height of described side direction contact area (44) be lower than the described second tubular zone (40) height 1/10th.
7. according to each described device in the claim 1 to 6, it is characterized in that described axial contact area (42) is arranged to as far as possible near described elastically deformable part (18), for example with this elastically deformable part (18) at a distance of 2 millimeters of less thaies.
8. according to each described device in the claim 1 to 7, it is characterized in that the described first tubular zone (16), the described second tubular zone (40) and described elastically deformable part (18) are embodied on the same member that is called outside main body (2); The main body of described outside (2) has an inside surface; Described inside surface has a shoulder near described elastically deformable part (18), this shoulder has an axially mounting face (42), this axially mounting face (42) and a circumferential flank surface (44) adjacency; And described interface interaction spare (20) is bearing on the described axially mounting face (42) on the one hand, and is bearing on the described circumferential flank surface (44) by the press fit mounting means on the other hand.
9. according to each described device in the claim 1 to 7, it is characterized in that the described first tubular zone (16), the described second tubular zone (40) and described elastically deformable part (18) are implemented on two different members.
10. device according to claim 9 is characterized in that, one first member has the part in the described first tubular zone (16), described elastically deformable part (18) and the described if necessary second tubular zone (40); One second member is corresponding to the major part in the described second tubular zone (40); And described interface interaction spare (20) has an annular region (46), and the external diameter of described annular region (46) is corresponding to the external diameter in the described second tubular zone (40), and described annular region (46) is disposed between described first member and described second member.
11. device according to claim 9 is characterized in that, one first member has the part in the described first tubular zone (16), described elastically deformable part (18) and the described if necessary second tubular zone (40); One second member is corresponding to the major part in the described second tubular zone (40); Described first member has an inside surface; Described inside surface has a shoulder near described elastically deformable part (18), described shoulder has an axially mounting face (42), described axially mounting face (42) and a circumferential flank surface (44) adjacency; And described interface interaction spare (20) is bearing on the described axially mounting face (42) on the one hand, is bearing on the described circumferential flank surface (44) by the press fit mounting means on the other hand.
12. device according to claim 9, it is characterized in that one first member has the part in described interface interaction spare (20) and the described first tubular zone (16), described elastically deformable part (18) and the described if necessary second tubular zone (40); And one second member is corresponding to the major part in the described second tubular zone (40).
13., it is characterized in that it relates to heater plug according to each described device in the claim 1 to 12.
14. internal combustion engine is characterized in that, it has according to each described device in the claim 1 to 13.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0804923 | 2008-09-08 | ||
| FR0804923A FR2935797B1 (en) | 2008-09-08 | 2008-09-08 | DEVICE INCORPORATING A PRESSURE SENSOR FOR MEASURING PRESSURES IN AN INTERNAL COMBUSTION ENGINE |
| PCT/FR2009/001063 WO2010066956A1 (en) | 2008-09-08 | 2009-09-04 | Device incorporating a pressure sensor for measuring pressures within an internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102150027A true CN102150027A (en) | 2011-08-10 |
| CN102150027B CN102150027B (en) | 2014-10-29 |
Family
ID=40430093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200980134836.8A Expired - Fee Related CN102150027B (en) | 2008-09-08 | 2009-09-04 | Device incorporating a pressure sensor for measuring pressures within an internal combustion engine |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US8875565B2 (en) |
| CN (1) | CN102150027B (en) |
| FR (1) | FR2935797B1 (en) |
| WO (1) | WO2010066956A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5911399B2 (en) * | 2011-08-19 | 2016-04-27 | 日本特殊陶業株式会社 | Glow plug with combustion pressure detection sensor |
| DE102011087641A1 (en) * | 2011-12-02 | 2013-06-06 | Robert Bosch Gmbh | Pressure measuring device with additional diaphragm |
| CN104508380B (en) * | 2012-08-09 | 2016-04-27 | 博世株式会社 | Integrated pressure sensors formula glowing plug |
| CN104201291A (en) * | 2014-08-26 | 2014-12-10 | 京东方科技集团股份有限公司 | Organic electroluminescent device and manufacturing method thereof |
| JP6607005B2 (en) * | 2015-12-01 | 2019-11-20 | 株式会社デンソー | Glow plug integrated combustion pressure sensor |
| DE102017113838A1 (en) * | 2017-06-22 | 2018-12-27 | Man Diesel & Turbo Se | Internal combustion engine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2884299A1 (en) * | 2005-04-12 | 2006-10-13 | Siemens Vdo Automotive Sas | PREHEATING PLUG WITH INTEGRATED PRESSURE SENSOR AND BODY OF SUCH A PREHEATING PLUG |
| DE102006008639A1 (en) * | 2005-12-23 | 2007-06-28 | Robert Bosch Gmbh | Glowplug for engine pressure measurement has pre-stressing sleeve indirectly connected to heating element on one side and fixing element on other |
| DE102006059693A1 (en) * | 2006-12-18 | 2008-06-19 | Robert Bosch Gmbh | Pressure measuring device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3911930B2 (en) * | 1999-10-28 | 2007-05-09 | 株式会社デンソー | Glow plug with combustion pressure sensor |
| FR2869390B1 (en) * | 2004-04-27 | 2006-07-14 | Siemens Vdo Automotive Sas | BODY OF A PREHEATING CANDLE COMPRISING A PRESSURE SENSOR |
| FR2935796B1 (en) * | 2008-09-08 | 2010-10-22 | Continental Automotive France | DEVICE INCORPORATING A PRESSURE SENSOR FOR MEASURING PRESSURES IN AN INTERNAL COMBUSTION ENGINE AND A BODY OF SUCH A DEVICE |
| US8217309B2 (en) * | 2008-12-15 | 2012-07-10 | Federal-Mogul Italy Srl. | Glow plug with pressure sensing canister |
| JP2012516547A (en) * | 2009-01-29 | 2012-07-19 | フェデラル−モーグル・イグニション・カンパニー | Spark plug with combustion sensor and attached engine components |
-
2008
- 2008-09-08 FR FR0804923A patent/FR2935797B1/en not_active Expired - Fee Related
-
2009
- 2009-09-04 WO PCT/FR2009/001063 patent/WO2010066956A1/en active Application Filing
- 2009-09-04 US US13/062,346 patent/US8875565B2/en not_active Expired - Fee Related
- 2009-09-04 CN CN200980134836.8A patent/CN102150027B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2884299A1 (en) * | 2005-04-12 | 2006-10-13 | Siemens Vdo Automotive Sas | PREHEATING PLUG WITH INTEGRATED PRESSURE SENSOR AND BODY OF SUCH A PREHEATING PLUG |
| DE102006008639A1 (en) * | 2005-12-23 | 2007-06-28 | Robert Bosch Gmbh | Glowplug for engine pressure measurement has pre-stressing sleeve indirectly connected to heating element on one side and fixing element on other |
| DE102006059693A1 (en) * | 2006-12-18 | 2008-06-19 | Robert Bosch Gmbh | Pressure measuring device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2010066956A1 (en) | 2010-06-17 |
| WO2010066956A8 (en) | 2011-03-17 |
| CN102150027B (en) | 2014-10-29 |
| US8875565B2 (en) | 2014-11-04 |
| US20120011924A1 (en) | 2012-01-19 |
| FR2935797B1 (en) | 2010-10-22 |
| FR2935797A1 (en) | 2010-03-12 |
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